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ECONOMIC ZOOLOGY 



interesting birds, but they are extremely useful as destroyers of insects 

 which they capture on the wing. 



8. Supply food, especially in the winter; and nesting material, 

 water, etc. , in the summer. To protect the birds while feeding or to keep 

 the food from being covered with snow, various kinds of plat- 

 forms and food houses have been constructed usually with the idea of 



PIG. 127. Pood shelf outside of window, so arranged that birds may be watched 

 from the room within. (From McAtee, How to Attract Birds in Northwestern 

 United States.) 



allowing the birds to be seen while feeding, Fig. 127, 128, 129 and 130. 

 Where water is scarce mud may be provided for the use of robins and 

 other birds that use it in building their nests. 



Where birds that are otherwise useful are destructive to small fruits 

 and berries they may be attracted away from these fruits by planting 

 about the orchard, for their especial Juse, various wild or uncultivated 



